Luminaire



FIG. 1 is a top view of a first embodiment of the design,

FIG. 2 is a side elevational view thereof, the same being symmetrical such that the reverse side is identical,

FIG. 3 is a bottom view thereof,

FIG. 4 is a top view of a second embodiment,

FIG. 5 is a side elevational view thereof, the same being symmetrical such that the reverse side is identical; and,

FIG. 6 is a bottom view thereof. 

The ornamental design for a luminaire, substantially as shown and described. 